Sharp even at f2.8. Great focal length.

Lens hood costs how much? Over $55!!!!

Ok in trueth I use the 20mm A f2.8 version. My understanding is that these lenses are optically identical. It's a fun lens. I use it in a lot of forest shots where I need to push away the trees (prevent crowding). I use this lens also in travel to get indoor shots (watch for that light falloff if you are trying to use a flash) and for cityscapes in Europe. It's a lot of fun. One of my best lenses-surprised it isn't an A*!

Customer Service

Pentax service on new items is first rate.

Similar Products Used:

Pentax 20mm f4

Light weight, optical quality

None

Very light for a 20/2.8, very sharp, moderate vignetting, average price (around $550 in New-York). I like that focal, too. For landscapes AND architecture. STRONGLY RECOMMENDED.

Similar Products Used:

Tamron MF 24/2.5, Leitz R-21/4, Leitz R-24/2.8

Superb color rendition, tack sharp edge to edge, small size, well corrected

None so far.

Its the best 20 I've seen. Its amazingly sharp and very well corrected. Very slight pincushion distortion visible only inf you have straight lines near the edges.

Customer Service

Never needed.

Similar Products Used:

Rokina RBC 17/3.5

Good for twilight and for foreground dominant compositions. Good color and detail.

Much larger than the old f4 M series, which is equally good.

This optic is uncanny. It is owned in the A version, but works well with the focus indicators for careful composition and exposure on the Z, LX and P series cameras. It is the same as the FA version. Great optic! Use a tripod to carefully compose, and a focus screen with grid lines to maintain perspective. This makes the Rocky Mountains jump.

Customer Service

No trouble to date.

Similar Products Used:

Nikkor 20mm f 2.8

Image quality. Size. Lightweight.

None.

Brilliant! Pinsharp and *NO* flare, even with a bright sun in the picture.

Customer Service

N/A

Similar Products Used:

Sigma 18-35MM zoom